Question

Based on the description in page http://twiki.org/cgi-bin/view/TWiki04/RegularExpression

I think %SEARCH{ "[Aa].*" scope="topic" order="topic"... can find out all topics that have topic name begin with A (ignore case).

But actually topics like WebSearch or WebLeftBar that have 'a' in the middle also appear in the result. What is the problem?

Environment

-- MagicYang - 19 Dec 2007

Answer

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%SEARCH{ "^[Aa].*" scope="topic" order="topic" type="regex" format="   * $topic" limit="16" }%

• ALLOWWEBVIEWcannotSearch
• ARGPullingMyHairOutConfigureBroken
• ASimpleSearchFormOnTheMainPage
• AUTOINCNotChoosingNextNumber
• AboutTWikiSupport
• AbsoluteUrl
• AbyssUserAuthentication
• AccentInFilenames
• AccessChangeOops
• AccessCheckErrorNoUser
• AccessCheckForChangeIssue
• AccessConfigurefile
• AccessControl
• AccessControlAndPermissionIssues
• AccessControlBasedOnHttpHeaderValues
• AccessControlConfusion

But -- ähm -- it's pretty unlikely that you will get topics starting with a lowercase letter.
And SEARCH ignores case anyway until you use casesensitive="on".

More interesting is a search for topics ending with a certain letter. This can be done by something like:

%SEARCH{ ".*[A]$" scope="topic" order="topic" type="regex" casesensitive="on" format="   * $topic" limit="16" }%

• NewUserInListAlwaysAppearsUnderA

Regular expressions are fascinating, indeed.

-- FranzJosefGigler - 19 Dec 2007

Thanks a lot! You are really good that the knowledge and sample should be put in RegularExpression topic in formal documents. There are too little information in these documents.

-- MagicYang - 20 Dec 2007